function resolve(hostname,     alias, cmd, ipaddr, line, name) {
   alias = ""
   name = ""
   cmd = "host -4 -t A " hostname
   while ((cmd | getline line) > 0) {
       if (match(line, / is an alias for /)) {
           alias = substr(line, 1, RSTART-1)
       } else if (match(line, / has address /)) {
           name = substr(line, 1, RSTART-1)
           ipaddr = substr(line, RSTART+RLENGTH)
           if (length(alias) > 0) {
               printf "%s %s %s\n", ipaddr, name, alias
           } else {
               printf "%s %s\n", ipaddr, name
           }
       }
   }
   close(cmd)
   return
}

{
   resolve($0)
}

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